perf, x86: Small fix to cpuid10_edx
authorLivio Soares <livio@eecg.toronto.edu>
Thu, 3 Jun 2010 19:00:31 +0000 (15:00 -0400)
committerIngo Molnar <mingo@elte.hu>
Tue, 8 Jun 2010 18:27:04 +0000 (20:27 +0200)
commite768aee89c687a50e6a2110e30c5cae1fbf0d2da
treef01b961d57317d56820c499557b97b903700c93f
parentbecf6c97a3abaefb2f01415c0b908a268c92b2c3
perf, x86: Small fix to cpuid10_edx

Fixes to 'cpuid10_edx' to comply with Intel documentation.
According to the Intel Manual, Volume 2A, Table 3-12, the cpuid for
architecture performance monitoring returns, in EDX, two pieces of
information:

  1) Number of fixed-function counters (5 bits, not 4)
  2) Width of fixed-function counters (8 bits)

Signed-off-by: Livio Soares <livio@eecg.toronto.edu>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/include/asm/perf_event.h